Permutation locking-ring



G. B. BERGEN.

PERMUTATION LOCKING RING.

APPLICATION FILED FEB. 6. I919.

Patented Aug. 23, 1921.

PATENT OFFICE.

GEORGE BENTLEY BERGEN, OF CHICAGO, ILLINOIS.

PERMUTATION LOCKING-RING.

Application filed February 6, 1919.

To all whom it may concern:

Be it known that I, GEORGE E. BERGEN, a citizen of the United States,and resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in a PermutationLocking-Ring, of which the following is a specification.

My invention relates to locking devices, particularly to a novelpermutation ring lock.

One of the principal objects of this invention is to provide a lockingdevice in the form of a ring or annulus, a section of the ring beingmovable in line with a portion of the body of the ring in order toprovide an opening in the ring. The movable part is adapted to be heldin locking position by means of a plurality of cylinders held inrotative position within the body of the ring member, these cylindersbeing so constructed and arranged as to be adapted for easy rotationfrom the exterior of the ring. Numerals disposed on the peripheries ofthe cylinders are so arranged as to be viewed through sight aperturesprovided in the ring casing and in such manner that the combination willbe set in order to effect the unlocking result.

The mounting of the cylinders which correspond to the tumblers of anordinary permutation lock constitutes one of the important features ofthe invention. These are so arranged that they are concentric with thelocking bolt and as it is not essential that any material portionsthereof project beyond the periphery of the ring casing, the lockingdevice is to all practical purposes when locked, a complete symmetricalannulus having no projecting parts. That the device has no projectionsis of the utmost importance for when the device is made of a resistantmaterial such as hardened steel, it is extremely difiicult to break it.This is so because there are no projecting portions of the ring whichmay serve as a fulcrum for an instrument used for breaking the lock. i

The lock may be employed for a multitude of purposes which need not beenumerated. It may assume other forms than that of an annulus.

The invention will be more readily understood by reference to theaccompanying drawing, wherein,

Figure 1 is an elevation of a ring pad- Specifldation of Letters Patent.

Patented Aug. 23, 1921.

Serial No. 275,303.

lock constructed in accordance with my invention;

Fig. 2 is a sectional view therethrough showing the bolt in lockedposition;

Figs. 3 and l are sectional views on the lines 3-3 4.-4= respectively ofFig. 2;

Fig. 5 is a view similar to Fig. 2 showing the bolt in unlockedposition;

Fig. 6 is an edge View of the device, and,

Fig. 7 is an enlarged elevation of one of the locking cylinders orsleeves.

In the drawings it will be seen that in the preferred embodiment of theinvention the padlock is composed of a tubular ring 10, which isincomplete, the open space being adapted to be closed by the arcuatebolt 11. This bolt is provided near one end with a peripheral flange 12,which serves as a limit stop in the two extreme positions of the bolt,as shown in Figs. 2 and 5. Near the other extremity of the belt Iprovide three lugs or projections 13, located in parallelism. These lugsare adapted to serve as the locking devices and to cooperate with thesocalled tumblers or sleeves 14. One of these devices is shown in Fig.7, by which it will be seen that it comprises a cylindrical portionwhich is substantially the size of the space within the tubular ring 10,this portion serving to guide and support the tumbler in its rotation.The tumbler has a knurled or milled flange 15, and is provided with anend wall 16, having an aperture 17, of substantially the size of thebolt 11. At one point in the aperture I provide a notch 18, best shownin Fig. 4:, of a size substantially e ual to the projections or lugs 13,on the olt. The periphery of the cylindrical portion of the tumbler hasnumerals 19, disposed thereon, these numerals being adapted to beexposed through small sight apertures 20, formed in the ring 10 at theproper point.

It will be noted by reference to Figs. 4 and 6, that the ring 10, isflattened somewhat at the point of engagement with the tumblers 14;, theflat sides 21, being brought into engagement with the cylindricalportions of the tumblers. The remainder of the ring portion at the pointof engagement with the tumblers is flared or enlarged somewhat tooverlie the milled flange 15, on the tumblers. Thus the flange mayreadily be engaged by the fingers at the sides but is retained andguided by the enlarged portion.

In assembling the device the ring is formed overthe tumblers, beingseamed or welded on the line 22. It will be understood, of course, thatthe notches 18, in. the tumblers will be located at different pointswith relation to the numbers on the periphery and therefore thatdifferent combinations of numbers will be required in order to bring thetumblers in such positions that the notche s will be in: line topermitthe bolt to be retracted;

The form and arrangement of-the parts are not essential and variousmodifications may be made therein. Means other than the arcuate boltmaybe employed in 'difl'erently shaped structures andthe devices foropening the ring may be changed. The essential feature of-the lock isconsidered to be the simple arrangement of the tumblers and theresultant economy in' manufacturing cost.

' It will be apparent that the locking tumblers may be disposed in theopposite end of the ring casing if desired, in which .case theprojections 13, on the bolt will'be located on the opposite end of thebolt. Thiswill jections on said bolt adapted to cotiperate with thenotches whenthe cylinders are rl' dis sed, substantially asdescribed.iln ad iice of the class described, the combination of a tubular casing,a bolt adapted to slide in said casing, a plurality of cylinders mountedwithin the tubular casing in end to end relation and fixedly heldtherein a ainstlongitudinal movement, said cylindersieing adapted tosurround the bolt, and being provided with notches and with 'exteriorlydisplayed numerals correlated with the notches, and projections on thebolt adapted to cooperate with said notches, substantially as described.

3. In a device of the class described, the

' combination of a tubular, incomplete annulus, a bolt mounted withcapacity for telescoping in said annulus, said bolt being provided witha plurality of alined projections, a plurality o cylindrical tumblersconcentrically mounted within the tubular annulus and adapted to receivethe bolt, said cylinders being flanged, a portion of the flangesprojecting outside of the limits of the annulus whereby to provide afinger gri for rotating the cylinders, said cylinders being providedwith notches adapted to oofiperate with the projections on the bolt,substantially as described.

4. In a locking device, the combination of an incomplete, annular,tubular casing,a bolt adapted to reciprocate within the casing, aplurality of cylindrical tumblers mounted within the casing, a boltadapted to project through the tumblers, said tumblers having acylindrical portion and a flange )ortion, said casing being pressed toprovi e a recess for a portion of the flange of each cylinder andnotched to permita portion of the flange to project outside of thecasing, substantially as described.

5. In a locking device, the combination of a tubular casing aboltadapted to telescope therein, aplurality of cylindrical tumblersmounted within said tubular casing, a flange on each of said tumblers,said flanges projecting outside of the limits of said tubular casin fora portion of their extent, said cylin ers being provided with aninterior notch, projections on said bolt, adapted to coiiperate with thenotches in said cylinders. each of said tumblers having numeralsdisplayed on the periphery thereof, and said casing being provided withoenings throu h which said numerals may viewed, S11)- stantially asdescribed.

6. In a locking ring, the combination of anincomplete tubular annulus,an arvuate bolt adapted to telescope within said annuhis and to closethe o ening in the annulus, said bolt being proy i ed with projections.a plurality of hollow, cylindrical tumblers adapted to receive saidarcuate bolt, said tumblers being interiorly notched to 006perate withthe projections on the bolt, said tumblers being provided with flangesadapted to furnish a fin er grip for rotatin the tumblers, the tumb ersbeing mounted within the tubular annulus, the annulus being flattenedand notched to permit of the projection of a portion of aflan e of eachtumbler outside of the limits ot the tubular annulus, substantially asdescribed.

Signed at Chicago, 111., this 1st day of Februar 1919.

G ORGE BENTLEY BERGEN. Witness:

T. D. BUTLER.

